1:30 
Sprite
Onix
The Rock Snake Pokémon
TL;DR. Onix is a rock/ground-type Pokémon from Generation I. Base Stat Total: 385. It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Rock Ground
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Height8.8 m
Weight210.0 kg
AbilitiesRock Head, Sturdy
HiddenWeak Armor
Base stats
Stat spread.
Total of 385. Higher peaks mean specialized roles, flat spreads favor versatility.
HP 35
Attack 45
Defense 160
Sp. Attack 30
Sp. Defense 45
Speed 70
Total385
385 base stat total, the 653rd-highest of all 1025 Pokémon species and 94th among Rock-types.
160 base Defense, Onix's strongest stat, ranking 7th of 140 Rock-types.
Rankings computed across all 1025 base-species Pokémon (Mega and Gigantamax forms excluded). Source: National Pokédex base stats.
Daily Pokémon · Video
Onix on Daily Pokémon
Onix was featured once as the Pokémon of the day. Tap a cover to play the short.
1:30 Pokémon GO
Onix in Pokémon GO.
Pokémon GO uses its own hand-tuned base stats, distinct from the main-series spread above. At a perfect 15/15/15, Onix reaches 1,101 CP at level 40 and 1,260 CP as a best buddy.
GO Attack85
GO Defense232
GO Stamina111
Max CP (L40)1,101
Max CP (L50)1,245
Best buddy (L51)1,260
Raid catch CP 580–629 (L20). Weather boosted 725–787 (L25).
Run the numbers: CP & HP calculator · PvP IV optimizer · Catch CP calculator
Competitive
Onix in competitive play.
Recommended builds and battle rankings for Onix across the current metagames. In Pokémon GO it ranks #876 in the Great League.
Pokémon GO Battle League
Great League #876 65.7 score
Build around it: GO PvP IV optimizer · Team builder · Ask Dia
Movesets via Smogon, GO ranks via PvPoke. Updated 2026-06-01.
Quick answers
Common questions about Onix.
Direct, sourced answers to the most-asked questions about Onix, each computed straight from its Pokédex data.
What type is Onix?
Onix is a Rock/Ground-type Pokémon. Dual-typing stacks weaknesses and resistances. see the full matchup table below.
What is Onix weak to?
Onix takes 4× damage from Water, Grass. its biggest defensive liability. It also takes 2× damage from Ice, Fighting, Ground, Steel.
What is Onix resistant to?
Onix is immune to Electric. It also resists Normal, Fire, Flying, Rock, Poison.
How does Onix evolve?
Onix evolves into Steelix (Trade holding Metal Coat).
What generation is Onix from?
Onix was introduced in Generation I (the Kanto region). Its Pokédex number is #0095.
What are Onix's base stats?
Onix has HP 35, Attack 45, Defense 160, Special Attack 30, Special Defense 45, and Speed 70. Total base stat total: 385.
What are Onix's abilities?
Onix can have the abilities Rock Head, Sturdy, plus the Hidden Ability Weak Armor.
Is Onix legendary or mythical?
No. Onix is a regular Pokémon, not classified as Legendary or Mythical.
What is Onix's best stat?
Onix's highest base stat is Defense at 160, which ranks 7th of 140 Rock-type Pokémon.
Is Onix good?
Onix has a base stat total of 385, the 653rd-highest of all 1025 Pokémon species and 94th among Rock-types. That is a modest total, typical of an unevolved or utility Pokémon.
Sprites · Sound
Through the generations.
Onix as drawn across two decades of Pokémon games, plus the modern Pokémon HOME render. Hit the cry button to hear it.
Type matchups
In battle.
Damage multipliers when Onix is hit by each attacking type. 4× is two stacked weaknesses, ¼× is two stacked resistances.
4× Devastating
Water Grass
2× Weak to
Ice Fighting Ground Steel
½× Resists
Normal Fire Rock
¼× Strongly resists
Poison
0× Immune to
Electric
Comparison
Onix vs. the average Rock-type.
Each base stat measured against the mean across all 140 Rock-type Pokémon.
| Stat | Onix | Rock avg | Difference |
|---|---|---|---|
| HP | 35 | 73 | -38 |
| Attack | 45 | 87 | -42 |
| Defense | 160 | 94 | +66 |
| Special Attack | 30 | 59 | -29 |
| Special Defense | 45 | 70 | -25 |
| Speed | 70 | 56 | +14 |
| Total | 385 | 439 | -54 |
Game appearances
Onix appears in 32 games.
Every mainline release where Onix is obtainable, has a dex entry, or is transferable. Grouped by generation.
Gen I
- 1998 Blue
- 1998 Red
- 1999 Yellow
Gen II
- 2000 Gold
- 2000 Silver
- 2001 Crystal
Gen III
- 2003 Ruby
- 2003 Sapphire
- 2004 FireRed
- 2004 LeafGreen
- 2005 Emerald
Gen IV
- 2007 Diamond
- 2007 Pearl
- 2009 Platinum
- 2010 HeartGold
- 2010 SoulSilver
Gen V
- 2011 Black
- 2011 White
- 2012 Black 2
- 2012 White 2
Gen VI
- 2013 X
- 2013 Y
- 2014 Alpha Sapphire
- 2014 Omega Ruby
Gen VII
- 2018 Let's Go, Eevee!
- 2018 Let's Go, Pikachu!
Gen VIII
- 2019 Shield
- 2019 Sword
- 2022 Legends: Arceus
Gen IX
- 2025 Legends: Z-A
- 2026 Pokémon Pokopia
Side games + live service
- 2016 Pokémon GO
Pokémon Champions: Champions availability TBD . Full roster pending official reveal.
Where to find
Catch Onix in the wild.
Main-series wild-encounter locations, grouped by game. 27 games have a known habitat.
Diamond, Pearl
Iron Island 1FIron Island B1f LeftIron Island B1f RightIron Island B2f LeftIron Island B2f RightIron Island B3fOreburgh Mine 1FOreburgh Mine B1fSinnoh Victory Road 1FSinnoh Victory Road 2FSinnoh Victory Road InsideSinnoh Victory Road Inside ExitSnowpoint Temple 1FSnowpoint Temple B1fSnowpoint Temple B2fSnowpoint Temple B3fStark Mountain EntranceStark Mountain Inside
Platinum
Iron Island 1FIron Island B1f LeftIron Island B1f RightIron Island B2f LeftIron Island B2f RightIron Island B3fOreburgh Mine 1FOreburgh Mine B1fSinnoh Victory Road 1FSinnoh Victory Road 2FSinnoh Victory Road B1fSinnoh Victory Road InsideSinnoh Victory Road Inside ExitWayward Cave 1FWayward Cave B1f
Gold, Silver, Crystal
Kanto Victory Road 1 1FKanto Victory Road 1 2FKanto Victory Road 1 3FMT Silver 1FMT Silver TopRock Tunnel B1fUnion Cave 1FUnion Cave B1fUnion Cave B2fViolet City Southwest House
HeartGold, SoulSilver
Johto Route 47 Inside CaveJohto Safari Zone Zone WastelandKanto Victory Road 1 1FKanto Victory Road 1 2FKanto Victory Road 1 3FMT Silver 1FMT Silver MountainsideRock Tunnel B1fUnion Cave 1FUnion Cave B1fUnion Cave B2f
Let's Go Pikachu, Let's Go Eevee
Kanto Victory Road 1 1FKanto Victory Road 1 2FKanto Victory Road 1 3FMT Moon 1FMT Moon B1fMT Moon B2fRock Tunnel 1FRock Tunnel B1f
FireRed, LeafGreen
Kanto Victory Road 2 1FKanto Victory Road 2 2FKanto Victory Road 2 3FRock Tunnel 1FRock Tunnel B1fSevault Canyon
Red, Blue, red-japan, green-japan
Kanto Victory Road 2 1FKanto Victory Road 2 2FKanto Victory Road 2 3FRock Tunnel B1fRock Tunnel B2f
Yellow
Kanto Victory Road 2 1FKanto Victory Road 2 2FKanto Victory Road 2 3FRock Tunnel B2f
Black, White
Relic Castle C
Black 2, White 2
Clay TunnelGlacier RoomIron RoomRelic Passage Castelia Sewers EntranceRelic Passage Pwt EntranceRelic Passage Relic Castle EntranceRocky Mountain RoomTwist Mountain B1f 3FUnderground RuinsUnova Victory Road 2 Unknown Area 74Unova Victory Road 2 Unknown Area 75Unova Victory Road 2 Unknown Area 77Unova Victory Road 2 Unknown Area 80
X
Cyllage CityFriend Safari RockGlittering Cave Unknown Area 303Glittering Cave Unknown Area 304
Y
Friend Safari RockGlittering Cave Unknown Area 303Glittering Cave Unknown Area 304
Ultra Sun, Ultra Moon
Ten Carat Hill Inside
Omega Ruby, Alpha Sapphire
Mirage Spot Cave North OF FortreeMirage Spot Cave South East OF Route 129
Pokémon anime
Onix appears in 72 episodes.
From EP001 (1997-04-01) through JN084 (2021-10-22).
- EP001 Pokémon, I Choose You! Original 1998-09-08
- EP005 Showdown in Pewter City Original 1998-09-14
- EP006 Clefairy and the Moon Stone Original 1998-09-15
- EP016 Pokémon Shipwreck Original 1998-09-29
- EP031 Dig Those Diglett! Original 1998-10-19
- EP033 The Flame Pokémon-athon! Original 1998-10-21
- EP045 The Song of Jigglypuff Original 1999-02-20
- EP050 Who Gets to Keep Togepi? Original 1999-03-27
- EP053 The Purr-fect Hero Original 1999-09-11
- EP055 Pokémon Paparazzi Original 1999-04-17
- EP057 The Breeding Center Secret Original 1999-05-01
- EP059 Volcanic Panic Original 1999-09-18
+ 60 more episodes
- EP070 Make Room for Gloom Original 1999-10-04
- EP071 Lights, Camera, Quack-tion! Original 1999-10-08
- EP072 Go West, Young Meowth Original 1999-10-09
- EP073 To Master the Onixpected! Original 1999-10-11
- EP076 All Fired Up! Original 1999-10-23
- EP081 Friend and Foe Alike Original 1999-11-27
- EP082 Friends to the End Original 1999-11-27
- EP083 Pallet Party Panic Original 1999-12-04
- EP087 Fit to Be Tide Original 2000-02-05
- EP092 Stage Fight! Original 2000-02-12
- EP096 Snack Attack Original 2000-03-25
- EP115 Viva Las Lapras Original 2000-09-30
- EP116 The Underground Round-Up Original 2000-09-30
- EP120 The Double Trouble Header Original 2000-10-21
- EP125 Spinarak Attack Original 2000-11-11
- EP130 The Whistle Stop Original 2000-12-02
- EP133 Fighting Flyer with Fire Original 2000-12-16
- EP134 For Crying Out Loud Original 2001-01-20
- EP145 Going Apricorn! Original 2001-03-10
- EP147 A Farfetch'd Tale Original 2001-03-17
- EP149 The Fire-ing Squad! Original 2001-04-21
- EP150 No Big Woop! Original 2001-03-31
- EP155 Love, Totodile Style Original 2001-05-26
- EP162 Air Time! Original 2001-09-08
- EP167 Hassle in the Castle Original 2001-09-29
- EP174 Mountain Time Original 2001-10-20
- EP188 UnBEARable Original 2002-01-19
- EP190 Spring Fever Original 2002-02-02
- EP193 The Dunsparce Deception Original 2002-02-23
- EP196 Ring Masters Original 2002-03-16
- EP204 The Big Balloon Blow-Up Original 2002-05-25
- EP207 The Kecleon Caper Original 2002-08-17
- EP208 The Joy of Water Pokémon Original 2002-08-24
- EP224 A Promise is a Promise Original 2002-12-07
- EP231 An EGG-sighting Adventure! Original 2003-01-11
- EP233 Dues and Don'ts Original 2003-01-25
- EP246 Enlighten Up! Original 2003-04-26
- EP249 Outrageous Fortunes Original 2003-05-10
- EP253 Beauty Is Skin Deep Original 2003-05-31
- EP259 Lapras of Luxury Original 2003-07-26
- AG034 Having a Wailord of a Time Advanced Generation 2004-05-22
- AG072 The Bicker the Better Advanced Generation 2005-04-02
- AG137 Hooked on Onix Advanced Generation 2006-05-06
- AG173 All That Glitters is Not Golden! Advanced Generation 2006-11-28
- DP015 Shapes of Things to Come! Diamond & Pearl 2007-06-27
- DP016 A Gruff Act to Follow! Diamond & Pearl 2007-06-28
- DP017 Wild in the Streets! Diamond & Pearl 2007-07-02
- DP018 O'er the Rampardos We Watched! Diamond & Pearl 2007-07-03
- DP046 A Maze-ing Race! Diamond & Pearl 2008-01-19
- DP091 One Team, Two Team, Red Team, Blue Team! Diamond & Pearl 2009-01-24
- DP108 Dealing with Defensive Types! Diamond & Pearl 2009-05-30
- DP134 Promoting Healthy Tangrowth! Diamond & Pearl 2009-12-05
- DP145 A Rivalry to Gible On! Diamond & Pearl 2010-02-20
- DP181 Bucking the Treasure Trend! Diamond & Pearl 2010-11-13
- BW087 Expedition to Onix Island! Black & White 2012-11-10
- XY020 Breaking Titles at the Chateau! XY 2014-06-07
- XY021 A PokéVision of Things to Come! XY 2014-06-14
- XY023 Coming Back into the Cold! XY 2014-06-28
- XY025 A Battle by Any Other Name! XY 2014-07-12
- JN084 An Adventure of Mega Proportions! Journeys 2022-05-26
Pokémon Masters EX · Sync Pairs
Onix partners with 3 trainers in Masters EX.
Each card is a canon Trainer + Onix partnership. Tap any pair to open the Sync Pair catalog and explore the full roster.
Pokémon Sleep · Slumbering type
Onix has 4 sleep styles.
Catch each pose by sleeping near Snorlax with enough Drowsy Power. Onix sleeps as a Slumbering type.
TCG Pocket appearances
6 Onix cards across TCG Pocket.
Every printed variant on iOS / Android. Tap any card for full art.
Find similar
Pokémon like Onix
Closest matches by typing, role, stats, and lore, from the same semantic search that powers the Reverse Dex.